This is the current version of the list I've got. It is tab delimited.
I've attempted to document various kinds of glottals. However, most of
what I have is for A78C/A78D because I had to document the languages that
used that character to get it accepted into Unicode. The others are just
ones I happened to notice in my investigations.

I'd be happy to update this list (and make it available again) if anyone
wants to send me the ISO 639-3 code and what kind of glotal (USV) that
language uses. My list is primarily smaller language groups and so I'm
sure we could add quite a few "majority" languages to this list.